v1.4.0-beta.3

What's Changed

• Consolidate application systems and remove migrations by @Anton-Horn in #440
• Bump pi packages to 0.80.6 for new model catalog by @Anton-Horn in #441
• fix(canvas): make undo restore deleted panels by @Anton-Horn in #442
• Enable cate CLI by default and seed the cate-cli skill per workspace by @Anton-Horn in #443
• Cate Agent: structured verifier verdicts with per-check results by @Anton-Horn in #444
• chore: remove .agents folder and gitignore it by @Anton-Horn in #446
• Rework the cate CLI and host API surface for agent use by @Anton-Horn in #445
• fix(terminal): lock the middle-click pan-jump guard behind a test by @Anton-Horn in #447
• chore(skills): rebuild skills index by @github-actions[bot] in #437
• fix(terminal): stop WebGL glyph atlas desync and process-wide context overflow by @Anton-Horn in #449
• feat(cate-agent): dedicated sidebar home — composer, chat tabs, nav rail, merge-target by @PaulHorn in #450
• chore(release): bump version to 1.4.0-beta.3 by @Anton-Horn in #451
• fix(release): sign pi's darwin native addons for macOS notarization by @Anton-Horn in #452

Full Changelog: v1.4.0-beta.2...v1.4.0-beta.3